Sodium alginate

Application: As a high molecular weight substance, sodium alginate has the functions of suspending, thickening, emulsifying, and bonding. It is mainly used as a suspending agent, emulsifier, viscosity agent, capsule material of microcapsules, etc. in medicines. It is used as a binder (1% to 3%) and disintegrant (2.5% to 10%) for tablets; as a diluent in capsules; it is also used to prepare oral sustained-release preparations because it can delay the release of drugs from water-soluble suspensions; it is widely used as a thickener and suspending agent (5% to 10%) in pastes, ointments and gels, and as a stabilizer (1% to 3%) in water-in-oil emulsions. A 0.5% to 2.5% aqueous solution can be used to lubricate the eroded surface of the skin and can eliminate and dry watery secretions. Food additives: emulsifier, film-forming agent, thickener.